Matter would have escape velocity but not light. Gravity does noteffect the C speed quantityLight emiited inside would still be moving outward at C.

The original lie for General Relativity at its extreme is now out inthe open.Space contraction ruled out black holes the first time they werelooked at.Einstein knew better. He didn't go along with complete collapsesingularity.But he was not equiped to correct his new theory.The correction is limited strength curved space.

There are no boundaries in space even local as in a black holeboundary.There are no universal boundaries local or hypersphere universe.